What's better than momentum? Mo' momentum.

Let's take a closer look at five of this past week's biggest scorchers.

Company

Nov. 30

Weekly Gain

My Watchlist

Acadia Pharmaceuticals (NASDAQ:ACAD)

$5.20

134%

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James River Coal (NASDAQOTH:JRCCQ)

$3.69

48%

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Knight Capital Group (NYSE:KCG)

$3.37

35%

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Five Below (NASDAQ:FIVE)

$37.15

30%

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Smart Balance (NASDAQ:BDBD)

$12.43

16%

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Source: Barron's.

This week's biggest winner by far was Acadia.

Shares of the biotech more than doubled following encouraging test results for its treatment for Parkinson's-related psychosis. The drug helps reduce the hallucinations and delusions that inflicts many sufferers of Parkinson's disease.

James River Coal got a boost after a Raymond James analyst upgraded the stock, arguing that coal producers will grow more attractive as natural-gas prices rise into the winter. The problem from here is that the stock's robust 48% pop on the week finds it trading higher than the analyst's $3 price target.

Knight Capital surged after receiving not one, but two buyout offers. Investors are hoping a bidding war erupts to drive the stock even higher.

Five Below rose above its lower-than-expected guidance. The retailer that sells fashionable items for $5 or less warned that the holiday quarter would fall shy of Wall Street's targets. However, the devastating Sandy storm is largely to blame. Investors accepted that and instead chose to focus on the company's better-than-expected results for the recently concluded quarter.

RBC Capital initiated coverage of Smart Balance as a "Top Pick" with a price target of $16. Smart Balance is best-known for its line of heart-healthy buttery spreads.

More winners for you
It was a great week for these five stocks. If you want to get an early read on some of tomorrow's major gainers, there's a special report on three hidden winners in a booming industry. The report is free -- like this article -- but it won't be around forever, so click here to check it out now.

Longtime Fool contributor Rick Aristotle Munarriz has no positions in the stocks mentioned above. The Motley Fool has no positions in the stocks mentioned above. Motley Fool newsletter services recommend Smart Balance. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.